In accordance with the National Highway Traffic Safety Association's "National Impaired Driving Enforcement Crackdown," Yellowstone National Park rangers will be conducting safety and sobriety checkpoints on Highway 191 inside the park on May 8. Yellowstone law enforcement staff will be looking primarily for drivers who are impaired and for other traffic and safety violations.

In 2007, Yellowstone law enforcement rangers investigated over 593 vehicle accidents, 2 of which resulted in fatalities, including 1 as the result of a head-on, 2 vehicle DUI crash on Highway 191.

Park staff members are very committed to safety and safe driving in the park. With over 300 miles of paved roads, Yellowstone has some unique driving conditions. Visitors are reminded that federal law requires the occupants of vehicles to wear seatbelts when driving on park roads.